This Caterpillar starts as a pale green dome-shaped egg
laid on the surface of a foodplant leaf.
The egg develops a brown ring after a few days.

The caterpillar is very colourful,
being mainly bluish green,
with a pair of lemon lines extending along most of the back.
The thorax has a mid-dorsal purple streak,
and there are purple dots below the lemon lateral lines, one per segment.
The spiracles are bright orange and ringed with grey and purple.
The head is mainly green, except the face is mauve,
and there is a purple patch above each antenna.
The mouth parts are pink,
and include a pair of fleshy flaps which protrude forward.
The caterpillar is tapered at both ends.
It is also especially sensitive to light, and will turn away from it.